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@tutti @Hire www www B. RfHAW'LE'Y, or. NORMAL. ILLINOIS.l

Letters Patent No. 84,117, (lated November 17, 1868.

IMPROVEMENT 1N nRYrNaxmNs.

The Schedulereferred to in these Letters Patent and making part of thesame.

To ail 'whom it mayconcem v Be it known that I, B. It. HAwLnY, ofNormal, in the county of McLean, and Siate of Illnois,have made certainnew and useful Improvements in Drying-Houses or Kilns; and I do herebydeclare that the following v is a full and clear description thereof,reference being had tothe accompanying drawings, and to the letters ofreference marked thereon.

The subject of this invention is a drying-house or kiln, to be used fordrying fruit, grain, lumber, clothes, &c. The invention relates to apeculiar arrrangement of the cold and hot-air ducts, and also to thecombinaiiontherewith of tubular heaters' for vwarming the-'air Awhich isto do the drying in the house or kiln.

.The outer walls A of this house or kiln may be constructed of any ofthe most approved materials used for this purpose.

In the bottom part of the house Will be the fire-box B, which will beenclosed by the vertical walls of the hot-air chamber B', so as to leavean air-passage, l2, surrounding the said fire-box on all sides, exceptthat occupied by the fuel-door.

From the top part of the fire-box rise the smoketubes C, which are alsoenclosed within the hot-air chamberv B', and which convey the smoke fromthe furnaceto the smoke-pipe'G, and thence to the chimney D.

The Wells of the hot-air chamber B' extend nearly to the top ofthe houseor kiln, or at least to the height` of the top shelf or oor.

Surrounding the hot-air chamber, or arranged by the side of it, are thedrying-chambers A', which are fitted with shelves, a), or otherequivalent devices, for sustaining the article which is to be dried.

which is to stand upon short legs, a, for this purpose, or acold-air'duct may be provided instead. While passing up through thechamber b, which is a very narrow one, the cold air cornes in direct andintimate contact with the heat-ed plates of the fire-box, andconsequently it is quickly heated thereby. Then, as the air ascends intothe hot-air chamber B', above the lire-box, the smoke-fines or tubes Gwill very rapidly impart to ita considerable increment of heat, and thusit will be iitted for the purpose for which it is intended.

From the top end of the chamber B' the heated air will pass over intothe chamber A', iu the direction of the am'ows,and down through the saidchambers, to

'by the mode of heating it in b and B'; and secondly,

by allowing the spent and dampened'air to escape from the bottom of thekiln or house, where, of course, it will be dampest and coldest, insteadof from the top, as other kilns do, and where, of course, the hottestair is lodged.

Having described my invention,

What I claim isl. The dry-house or kiln A, when provided with an inlet,b, surrounding the fire-box, at or near the base of the house, and withthe heating-chamber B', which is to be so` arranged as to conduct theheated air to the top ofthe building, and the upcast shafts or chimneysD, When the latter are arranged to take the .vitiated or spent air fromthe bottoms of the chambers Afsubstantially as described and for thepurpose shown.

2. The fire-box B, the smoke-tubes C, and the hotair chambers b and B',when constructed and employed as and for the purpose set forth.

B. R. HAWIJEY.

Witnesses:

M. RANDOLPH, S. M. RANDOLPH.

